gistfile1.txt

public class TransactionProvider : ITransactionProvider<SqlTransaction>
    {
        private const string TransactionField = "StoreTransaction";

        private const BindingFlags BindingFlags = System.Reflection.BindingFlags.FlattenHierarchy | System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.InvokeMethod
                                                  | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.GetProperty | System.Reflection.BindingFlags.NonPublic;

        public SqlTransaction GetTransaction()
        {
            var sqlTransaction = (SqlTransaction)this.transaction.GetType()
                                                     .InvokeMember(TransactionField,
                                                         BindingFlags, null, this.transaction, new object[0]);

            return sqlTransaction;
        }

        private readonly DbTransaction transaction;

        public TransactionProvider(DbTransaction transaction)
        {
            this.transaction = transaction;
        }
    }